Canon G12 vs G15

The Canon PowerShot G12 and the Canon PowerShot G15 are two digital cameras that were announced, respectively, in September 2010 and September 2012. Both the G12 and the G15 are fixed lens compact cameras that are equipped with a 1/1.7-inch sensor. The G12 has a resolution of 10 megapixels, whereas the G15 provides 12 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications

Canon G12		Canon G15
Fixed lens compact camera		Fixed lens compact camera
28-140mm f/2.8-4.5		28-140mm f/1.8-2.8
10 MP – 1/1.7" sensor		12 MP – 1/1.7" sensor
720/24p Video		1080/24p Video
ISO 80-3,200 (80 - 12,800)		ISO 80-12,800
Optical viewfinder		Optical viewfinder
2.8" LCD – 461k dots		3.0" LCD – 922k dots
Swivel screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
1.1 shutter flaps per second		2.1 shutter flaps per second
370 shots per battery charge		350 shots per battery charge
112 x 76 x 48 mm, 401 g		107 x 76 x 40 mm, 352 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G12 and the Canon PowerShot G15? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

The side-by-side display below illustrates the physical size and weight of the Canon G12 and the Canon G15. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon G15 is somewhat smaller (4 percent) than the Canon G12. Moreover, the G15 is markedly lighter (12 percent) than the G12. In this context, it is worth noting that neither the G12 nor the G15 are weather-sealed.

Concerning battery life, the G12 gets 370 shots out of its Canon NB-7L battery, while the G15 can take 350 images on a single charge of its Canon NB-10L power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price (USD)	Street Price
1.		Canon G12	112 mm	76 mm	48 mm	401 g	370	n	Sep 2010	499	ebay.com
2.		Canon G15	107 mm	76 mm	40 mm	352 g	350	n	Sep 2012	499	ebay.com
3.		Canon G16	109 mm	76 mm	40 mm	356 g	360	n	Aug 2013	549	ebay.com
4.		Canon SX50	123 mm	87 mm	106 mm	595 g	315	n	Sep 2012	429	ebay.com
5.		Fujifilm X10	117 mm	70 mm	57 mm	350 g	270	n	Sep 2011	599	ebay.com
6.		Nikon P7800	119 mm	78 mm	50 mm	399 g	350	n	Sep 2013	549	ebay.com
7.		Olympus E-450	130 mm	91 mm	53 mm	440 g	500	n	Mar 2009	499	ebay.com
8.		Panasonic FZ150	124 mm	82 mm	92 mm	528 g	410	n	Aug 2011	499	ebay.com
9.		Panasonic G2	124 mm	84 mm	74 mm	428 g	360	n	Mar 2010	599	ebay.com
10.		Panasonic G10	124 mm	84 mm	74 mm	388 g	380	n	Mar 2010	499	ebay.com
11.		Panasonic LX5	110 mm	65 mm	43 mm	271 g	400	n	Jul 2010	499	ebay.com
12.		Panasonic LX7	111 mm	68 mm	46 mm	298 g	330	n	Jul 2012	499	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The two cameras under review were launched at the same price and fall into the same market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature a 1/1.7-inch sensor and have a format factor (sometimes also referred to as "crop factor") of 4.6. Within the spectrum of camera sensors, this places the review cameras among the smaller-sensor digicams that favor affordability and compact design. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Technology-wise, the G15 uses a more advanced image processing engine (DIGIC 5) than the G12 (DIGIC 4), with benefits for noise reduction, color accuracy, and processing speed.

While the two cameras under review share the same sensor size, the G15 offers a higher resolution of 12 megapixels, compared with 10 MP of the G12. This megapixels advantage translates into a 10 percent gain in linear resolution. On the other hand, these sensor specs imply that the G15 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 1.89μm versus 2.07μm for the G12). However, it should be noted that the G15 is much more recent (by 2 years) than the G12, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size.

The resolution advantage of the Canon G15 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G15 for good quality output (200 dots per inch) amounts to 20 x 15 inches or 50.8 x 38.1 cm, for very good quality (250 dpi) 16 x 12 inches or 40.6 x 30.5 cm, and for excellent quality (300 dpi) 13.3 x 10 inches or 33.9 x 25.4 cm. The corresponding values for the Canon G12 are 18.2 x 13.7 inches or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inches or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inches or 30.9 x 23.2 cm for excellent quality prints.

The Canon PowerShot G12 has a native sensitivity range from ISO 80 to ISO 3200, which can be extended to ISO 80-12800. The corresponding ISO settings for the Canon PowerShot G15 are ISO 80 to ISO 12800 (no boost).

In terms of underlying technology, the G12 is build around a CCD sensor, while the G15 uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon G12	1/1.7	10.0	3648	2736	720/24p	20.4	11.2	161	47
2.		Canon G15	1/1.7	12.0	4000	3000	1080/24p	19.9	11.5	165	46
3.		Canon G16	1/1.7	12.0	4000	3000	1080/60p	21.0	11.7	230	54
4.		Canon SX50	1/2.3	12.0	4000	3000	1080/24p	20.3	11.2	179	47
5.		Fujifilm X10	2/3	12.0	4000	3000	1080/30p	20.5	11.3	245	50
6.		Nikon P7800	1/1.7	12.0	4000	3000	1080/30p	21.2	11.7	200	54
7.		Olympus E-450	Four Thirds	10.0	3648	2736	none	21.5	10.5	512	56
8.		Panasonic FZ150	1/2.3	12.0	4000	3000	1080/60p	19.4	10.9	132	40
9.		Panasonic G2	Four Thirds	12.0	4000	3000	720/30p	21.2	10.3	493	53
10.		Panasonic G10	Four Thirds	12.0	4000	3000	720/30p	21.2	10.1	411	52
11.		Panasonic LX5	1/1.7	10.0	3648	2736	720/60p	19.6	10.8	132	41
12.		Panasonic LX7	1/1.7	10.0	3648	2736	1080/60p	20.7	11.7	147	50

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the G15 provides a better video resolution than the G12. It can shoot movie footage at 1080/24p, while the G12 is limited to 720/24p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The G12 and the G15 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The following table reports on some other key feature differences and similarities of the Canon G12, the Canon G15, and comparable cameras.

Core Features

		Camera Model	Viewfinder (Type or 000 dots)	Control Panel (yes/no)	LCD Specifications (inch/000 dots)	LCD Attach- ment	Touch Screen (yes/no)	Max Shutter Speed *	Max Shutter Flaps *	Built-in Flash (yes/no)	Built-in Image Stab
1.		Canon G12	optical	n	2.8 / 461	swivel	n	1/4000s	1.1/s	Y	Y
2.		Canon G15	optical	n	3.0 / 922	fixed	n	1/4000s	2.1/s	Y	Y
3.		Canon G16	optical	n	3.0 / 922	fixed	n	1/4000s	2.2/s	Y	Y
4.		Canon SX50	202	n	3.0 / 461	swivel	n	1/2000s	2.2/s	Y	Y
5.		Fujifilm X10	optical	n	2.8 / 460	fixed	n	1/4000s	10.0/s	Y	Y
6.		Nikon P7800	921	n	3.0 / 921	swivel	n	1/4000s	8.0/s	Y	Y
7.		Olympus E-450	optical	n	2.7 / 215	fixed	n	1/4000s	3.5/s	Y	n
8.		Panasonic FZ150	202	n	3.0 / 460	swivel	n	1/2000s	12.0/s	Y	Y
9.		Panasonic G2	1440	n	3.0 / 460	swivel	Y	1/4000s	2.6/s	Y	n
10.		Panasonic G10	202	n	3.0 / 460	fixed	n	1/4000s	2.6/s	Y	n
11.		Panasonic LX5	optional	n	3.0 / 460	fixed	n	1/4000s	2.5/s	Y	Y
12.		Panasonic LX7	optional	n	3.0 / 920	fixed	n	1/4000s	11.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

Both the G12 and the G15 have zoom lenses built in. The G12 has a 28-140mm f/2.8-4.5 optic and the G15 offers a 28-140mm f/1.8-2.8 (focal lengths in full frame equivalent terms). The G15 offers the faster maximum aperture.

Concerning the storage of imaging data, both the G12 and the G15 write their files to SDXC cards.

Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Canon PowerShot G12 and Canon PowerShot G15 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections

		Camera Model	Hotshoe Port	Internal Mic / Speaker	Microphone Port	Headphone Port	HDMI Port	USB Port	WiFi Support	NFC Support	Bluetooth Support
1.		Canon G12	Y	stereo / mono	-	-	mini	2.0	-	-	-
2.		Canon G15	Y	stereo / mono	-	-	mini	2.0	-	-	-
3.		Canon G16	Y	stereo / mono	-	-	mini	2.0	Y	-	-
4.		Canon SX50	Y	stereo / mono	-	-	mini	2.0	-	-	-
5.		Fujifilm X10	Y	stereo / mono	-	-	mini	2.0	-	-	-
6.		Nikon P7800	Y	stereo / mono	Y	-	mini	2.0	-	-	-
7.		Olympus E-450	Y	- / -	-	-	-	2.0	-	-	-
8.		Panasonic FZ150	Y	stereo / -	-	-	mini	2.0	-	-	-
9.		Panasonic G2	Y	stereo / mono	-	-	mini	2.0	-	-	-
10.		Panasonic G10	Y	mono / -	-	-	mini	2.0	-	-	-
11.		Panasonic LX5	Y	mono / mono	-	-	mini	2.0	-	-	-
12.		Panasonic LX7	Y	stereo / mono	-	-	mini	2.0	-	-	-

Both the G12 and the G15 have been discontinued, but can regularly be found used on ebay. The G12 was replaced by the Canon G15, while the G15 was followed by the Canon G16. Further information on the features and operation of the G12 and G15 can be found, respectively, in the Canon G12 Manual (free pdf) or the online Canon G15 Manual.

Review summary

So how do things add up? Is the Canon G12 better than the Canon G15 or vice versa? The listing below highlights the relative strengths of the two models.

Arguments in favor of the Canon PowerShot G12:

• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• More heavily discounted: Has been available for much longer (launched in September 2010).

Reasons to prefer the Canon PowerShot G15:

• More detail: Has more megapixels (12 vs 10MP), which boosts linear resolution by 10%.
• Better jpgs: Has a more modern image processing engine (DIGIC 5 vs DIGIC 4).
• Better video: Provides higher definition movie capture (1080/24p vs 720/24p).
• Larger screen: Has a bigger rear LCD (3.0" vs 2.8") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (922k vs 461k dots).
• Faster burst: Shoots at higher frequency (2.1 vs 1.1 flaps/sec) to capture the decisive moment.
• Better light gathering: Has a lens with a wider maximum aperture (f/1.8 vs f/2.8).
• Less heavy: Has a lower weight (by 49g or 12 percent) and is thus easier to take along.
• More modern: Reflects 2 years of technical progress since the G12 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the G15 is the clear winner of the contest (9 : 2 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

How about other alternatives? Do the specifications of the Canon G12 and the Canon G15 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the G12 and the G15 in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price (USD)	Street Price
1.		Canon G12	4/5	+	..	73/100	4.5/5	4.5/5	Sep 2010	499	ebay.com
2.		Canon G15	4/5	+	..	76/100	4.5/5	4.5/5	Sep 2012	499	ebay.com
3.		Canon G16	4/5	+	..	..	4.5/5	4.5/5	Aug 2013	549	ebay.com
4.		Canon SX50	3/5	+ +	..	72/100	4.5/5	4.5/5	Sep 2012	429	ebay.com
5.		Fujifilm X10	..	..	..	76/100	4/5	4.5/5	Sep 2011	599	ebay.com
6.		Nikon P7800	3/5	..	..	..	4/5	4.5/5	Sep 2013	549	ebay.com
7.		Olympus E-450	..	..	..	..	4/5	4/5	Mar 2009	499	ebay.com
8.		Panasonic FZ150	3/5	+ +	..	76/100	4/5	4.5/5	Aug 2011	499	ebay.com
9.		Panasonic G2	..	..	..	72/100	4/5	4.5/5	Mar 2010	599	ebay.com
10.		Panasonic G10	3/5	..	..	70/100	4/5	4/5	Mar 2010	499	ebay.com
11.		Panasonic LX5	4/5	+	..	73/100	4.5/5	4.5/5	Jul 2010	499	ebay.com
12.		Panasonic LX7	3/5	+ +	..	75/100	4/5	4.5/5	Jul 2012	499	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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